class_docstr: Override map and train methods
docstr: Identity map
  
  Notes
  -----
  Identity scales bypass the palette completely since the
  map is the identity function.
docstr_tok: ["Identity","map","Notes","--","--","-","Identity","scales","bypass","the","palette","completely","since","the","map","is","the","identity","function","."]
code: def map(self, x, limits=None) -> Sequence[Any]:
      """
      Identity map
  
      Notes
      -----
      Identity scales bypass the palette completely since the
      map is the identity function.
      """
      return x
  
imports: from __future__ import annotations
  import typing
  from .._utils.registry import alias
  from ..doctools import document
  from .scale_continuous import scale_continuous
  from .scale_discrete import scale_discrete
label_desc: Use image node_id 1 for calling the MapTrainMixin obj's underlying member method code with example usage: obj.map(x, limits) and returns: x